The New Orleans-class cruisers are a testing ground for innovative cruiser technology, which is why the class includes three distinct designs.

Design #1: New Orleans, Astoria, and Minneapolis Design #2: Tuscaloosa and San Francisco Design #3: Quincy and Vinson This class of cruisers is the direct ancestor of all subsequent American cruisers. Since the "New Orleans" class cruiser, the U.S. Navy has successively developed the "Brooklyn" class, "Wichita" class, "Cleveland" class and "Baltimore" class cruisers. Although still required to comply with the provisions of the Washington Naval Treaty, the New Orleans cruiser incorporated new technology because the Navy knew that when war broke out, it would need to use this knowledge to build warships that exceeded the treaty's restrictions. The U.S. Navy believes that cruisers with less than 10,000 tons are insufficient to carry out the responsibilities it shoulders. Initially, the USS Tuscaloosa (CA-37) was the lead cruiser of this class, but in 1930, the USS Astoria (CA-34) of the Portland class was originally intended to be built. The cruisers USS New Orleans (CA-32) and USS Minneapolis (CA-36) also used the design of the USS Tuscaloosa, only in private rather than naval shipyards. The cruisers USS Portland (CA-33) and USS Indianapolis (CA-35) were built according to the original design plan. All three cruisers of this class (USS Astoria, USS Quincy, and USS Vincennes) were lost in the Battle of Savo Island in 1942. Shortly after the Battle of Guadalcanal, the remaining cruisers of the class underwent modifications to reduce the weight of the ship's superstructure due to advances in new electronic and radar technology and an increase in the variety of anti-aircraft weapons systems. As a result, this class of cruiser has a new appearance, especially its bridge part, and becomes the "New Orleans" class cruiser.

After the end of World War II, the four surviving cruisers were quickly decommissioned and dismantled from 1959 to 1961. New Orleans class: The descendant of the Portland class, the New Orleans class is equipped with thicker armor than its predecessors. After the slash-type mechanical configuration was rejected, the armor was strengthened by shortening the hull. In 1942, the cruisers of this class were modernized and equipped with more powerful anti-aircraft weapons. The class consisted of seven ships; three of them were sunk by Japanese naval gunfire and torpedoes during the Battle of Savo Island during the Battle of Guadalcanal in 1942. The remaining ships were decommissioned in 1959. (All information comes from the World of Warships game) Survivability: 49 Combat ability (health volume): 35400 Armor: 16-127mm Artillery: 50 Main battery: 203mm/55 3X3 Range: 16.2KM Rate of fire: 4/minute rotation : 25.7 seconds HE: 3200 AP: 4600 Anti-aircraft gun: 5320mm Oerlikon MK4 9X1 20mm Oerlikon MK20 17X2 40mm Bofors MK2 6X4 127mm/25 MK19 8X1 Mobility: 67 Maximum speed: 33 knots Turning circle radius: 660 meters Rudder shift time: 9 seconds concealment: 56 Detection range by water: 12.4 kilometers Detection range by air: 7.5 kilometers Upgrade cost experience: Silver coins: 1,120,000